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90702668088 = 233217537571847
BaseRepresentation
bin101010001111001001…
…1001110000100111000
322200010020001221112100
41110132103032010320
52441224340334323
6105400200543400
76360460646364
oct1243623160470
9280106057470
1090702668088
113551532301a
12156b4181b60
138726586c06
14456636c2a4
15255cdc9943
hex151e4ce138

90702668088 has 192 divisors, whose sum is σ = 265504599360. Its totient is φ = 27866861568.

The previous prime is 90702668087. The next prime is 90702668093. The reversal of 90702668088 is 88086620709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90702668087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49107181 + ... + 49109027.

It is an arithmetic number, because the mean of its divisors is an integer number (1382836455).

Almost surely, 290702668088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90702668088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132752299680).

90702668088 is an abundant number, since it is smaller than the sum of its proper divisors (174801931272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90702668088 is a wasteful number, since it uses less digits than its factorization.

90702668088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686 (or 2679 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 90702668088 in words is "ninety billion, seven hundred two million, six hundred sixty-eight thousand, eighty-eight".